460 



IOWA DEPARTMENT OP AGRICULTURE 



vaccination and not from pen exposure. Hog yards should be broken 

 up and put into cultivation, disinfected by the use of lime and other 

 methods. When a herd has been vaccinated, corn should be withheld 

 from their ration for one or two weeks. Green corn has a predisposing 

 influence towards cholera. He thought successful vaccination depended 

 as much on the manner of the use of serum as on the serum itself. 



GTund Champion Beckshire Herd, 1913 Iowa State Fair and Exposition, lowana 

 Farms, Davenport, Iowa. 



